Topic: 136a alt upgrade question

[tbirde7]

Hey all, been searching the forum and web on this question but haven't found anything.

I had a friend pick me up a 136a alt from his local pick-n-pull.
     1998-2000 Dodge Ram Pickup - (PN:56027913AB Reman:R6027913AC)

On the back it has a plug instead of the threaded posts. I was thinking that I could just identify the wires (he got the plug connector. White/blu stripe and a solid green) and just use some eyelet terminals and hook it up since they are the field wires.  Another site I read said this alternator is internally regulated.

So question is will it work?

He got it awhile back and just got it to me so to late to take it back but I'm thinking it should work but not sure now.

Thanks
Mike

[sharpxmen]

7913 is externally regulated by the PCM, i have one on my Jeep, was the same on some GC models.

[tbirde7]

Hey sharp, cool thanks so I am right in the fact all I need to do is break out the multimeter and trace the connections and hook up right?

Thanks
Mike

[sharpxmen]

Hey sharp, cool thanks so I am right in the fact all I need to do is break out the multimeter and trace the connections and hook up right?

Thanks
Mike

hmm, sorry man i take it back, i think mine might be 1693AC but i can't confirm until i check it again which would be most likely in couple of days, i thought it was 7913 but i just checked the list and it's not found on GC so i'm not sure anymore.

[tbirde7]

No prob, if you don't mind let me know what you find out, I'm not going to proceed with that upgrade until I found out for sure, hopefully if anyone else has read post they will chime in.

Thanks
Mike

[Jeffy]

I didn't think there was an easy way to use one of those late model alternators.

[tbirde7]

Hey Jeffy, man I dunno with this thing I found info on one site that said it was internally regulated and you wouldn't need to put a fuse inline to the battery, then one site said its controlled by PCM and guy said he hooked white/blue striped wire to the green/orange striped on jeep as its showed 12 volts.

Dunno what's what other than wire colors being similar.

LoL
Mike

Might just need to get another one and make sure it has the posts.
Dunno

[sharpxmen]

before you get another one you can always take it apart and see if it has a regulator inside, some of them were built so you can change the regulator and brushes without splitting it in half (2 bolts and the regulator with brushes on it would come off).

[tbirde7]

Love this forum I bet I have looked at that alt atleast 30 times and the light bulb never came on to open it up, LoL
Thanks Sharp


Mike

[Jeffy]

Keep in mind that all of the screws and bolts are probably metric and the screw heads JIS.  If you're not careful, you can strip the screw heads easily.

[sharpxmen]

i did a bit of reading and apparently the 56027913 was found in GCs (around '98) and 56027913AB was a Dakota alternator

the AB has an internal regulator

i think though that you might be able to disconnect and bypass the regulator or just use it the way it was meant to be (use +12v switched to power the regulator)

[tbirde7]

Update, finally after three days of wiring schematics and staying up most of the night I got the whole setup done, did the volvo relay, taurus fan, saab inline adapter, audi temp sensor, and 136a Alternator.

took the cover off 136a alternator didn't see no regulator just the brush plate like whats on the two post.  Also with the aid of a flashlight there was a label on alternator that was faded out and using the flashlight to get a beam of light in the right spot, it states externally regulated.  I also took the time to add my optima battery, using the side posts with 2/0 guage wire and a 150A waterproof Circuit Breaker  from Autozone with the 136a Alt wired straight to it.  Also upgraded the PDC feeder from top post side of battery as well.

Now scratching my head looking at schematic trying to find an A/C command signal so that fan comes on once selector is moved.  Right now using the drk blu/blk from the A/C relay at PDC to turn fan on using a relay to ground SPDT.  Only problem is the fan turns on and off as the clutch does so dunno if there is a better way not liking that though.   Its gotta wait got to work tonight.

Mike

[Jeffy]

I guess you haven't read any of my threads then...  If you have AC and want the fan to stay on you will need to make a Y-harness between the blower switch and the thermostat.  You took the signal after the thermostat which is why it turns on and off with the compressor clutch.  Really there's not reason to have the fan on when the compressor is not on and the only time that's really necessary is when stopped.

[tbirde7]

Oh forgot to mention that on the connector of the 136a alt I did drk grn (Pigtail) to drk grn (Jeep wire) on wire and wht/blu (Pigtail) to grn/orange (Jeep wire) using crimped eyelets and small screws, that way if ever need to put stock alt back on no prolems.  Also used one of the case bolts for the ground.

Mike

[tbirde7]

Actually started searching last night after reviewing the schematic until got a headache but guess I wasn't using right buzz words, good to know it's out there.  Hmmm, some reason I was thinking that the fan constantly cutting off and on with compressor would shorten life of fan and relay.  Might just let it ride then will ponder on it and look for your thread on the harness while I'm at work tonight.

Thanks
Mike